Feeding and cold drawing mechanism



' Jan. 14,1941. IBERKEB|L 2,228,749

FEEDING AND COLD DRAWING MECHANISM Original Filed June 27, 1938 2 Sheets-Sheet 1 INVENTOR.

Zeeflerkebz'i ATTORNEY 'Jan. 14, 1941..

L. B ERKE BIL FEEDING AND COLD DRAWING MECHANISM Original FiIed June 2'7, 1938 2 Sheets- 8mm 2 I N VENT OR.

ATTORNEY? Patcnted Jail.

UNITED. STATES [PATENT OFFICE ufac Q poration of chig Company, Detroit, Mich, a cor-- Original application June 21, loss, Serial No. 216,134. Divided and this application May 8, 1939, Serial No. 272,506

I 17 Claims.

This invention relates generally to combined feeding and cold drawing mechanisms for head- Y ing machines and the like and constitutes a division ofv my application flied ,June- 27, 1938, bearing Serial No.'216,134.

One of the essential objects of the invention is to provide an improved means for actuating a reciprocating stock. v

In Another object is to provide such actuating means with adjustable means capable of providing equalizeddraft through the actuating means on the stock feeding mechanism.

Other objects, advantages and novel details of construction of this invention will be made more apparent as this description proceeds, especially when considered in connection with the accompanying drawings, wherein:

Figure l is a sectional plan view of aheading.

machine to which my improvements are applied;

. Figure 2 is a side elevation of the feeding mech-' Figure'3 is a vertical central longitudinal section therethrough; h

Figures 4 and 5' are diagrams-illustrating the operating and timing mechanism.

" Referring now to the drawings, Ais the bed or frame, and B is a reciprocating head of. a heading machine. As shown, the head 8 slidably engages ways 0 and is actuated by a crank or eccentric D on .the main driving shaft E,

through the medium of a connecting rod 1''. On the head -B is mounted a vertically reciprocat- 88 ing slide B'- which carries a plurality of heading dies B, B The stock for forming the blanks is advanced in a plane laterally offset from the plane of the dies 3*, B, It is then cut oil in predetermined lengths and the blanks thus 40 formed are transferred into the plane of the dies to be successively operated upon thereby. The mechanism for accomplishing these functions includes a gear wheel Gon the shaft E which drives an intermeshing gear wheel G in a 1 m2 4:5 ratio. The gear wheel G is upon a shaft G which extends transversely of the'bed parallel to the shaft E. At opposite ends of the shaft G are variable throw cranks G and G the one for operating the stockfeeding mechanism. 60 and the other for operating the blank shearing and transfer mechanism. There is also a cam (l: on the shaft (3 which operates a mechanism for actuating the slide B so as to" alternately place the dies 13 and B?- in registration with a cut-o3 blank in itsytransferred position. llore feeding mechanism for the in detail and as shown Figure 4, the crank (3 is provided with a crank pin H, which is adjustable radially in aslot H to increase or di- 'minlsh the throw thereof. A rod H connects this crank pin with an adjustable pin H on the lever H for oscillating a gear wheel I, the arrangement being such that for two revolutions of the crankshaft E one revolution is imparted improved stock feeding and drawing mechanism which will behereinafter described.

Thecrank G is connected by a rod J with a slide J which has a cam slot J engaging a pin J on a transversely movable slide J The slide J actuates the shearing and, transfer member J as will be later described. The mechanism'for operating the slide B is shown in Figure 5 and comprises a slotted member K slidably mounted on a bearing K' on the shaft G and reciprocated by the cam G which engages rollers K on said member K. The member K is connected to a rock arm K on a rocksha'ft K, which extends transversely of the bed and has a rock arm K connecting the same with the slide B. The cam (ii is so fashioned as to intermittently actuate this mechanism to end of the movement thereof.

Connected to the bed A and arranged in a vertical plane which is laterally offset from the plane of the dies B B is a frame L. This frame is formed in several sections including a central die-holding section L and sections 1F and I? on opposite sides thereof which constitute slidewaysfor stock feeders. The outer end of "fl'i'e frame is also 'floatlngly supported by a pivotal link member 1- which rises from a supporting base L The stock is advanced through the frame L in a direction from left to right, Figframe L are rock arms-w which are connected by links M with a sliding head N forming the forward feeder. As this feeder has heavy work to perform it is quite essential that the links M raise and lower the slide B with a dwell at each a Q therefore,

to the ma and 0 into 78 tions. A

elinksM'andhead to its shaft thro h the medium of a avingawide portionll'engaging the erockarmandanarrcwrightanguding portion in enga ing a kegway Thusbyreversingthekeyllthe becircumferentiallyadjustedupon tadlstanceequaltothevarlationin oftheportionsll'andll'. l'urtherand more accurate E g i the shaft. Thus by means of these two adjustinents the required accuracy and positioning of therockarmsmaybeaceomplished;

The alldehead N of the'forward feeder has spaced upper and lower portions forming wedge surfaces N which taper from forward to rear. These portions are held in rigid relation to each other by side plates N and splinesinot shown).

N are clamping laws within the recess and having their outer surfaces N with rollers N arranged therebetween. The laws N embrace the stock which is to be fed and during the forward movement of the head N the resistance or load'will tend to drawvthe' jaws rearward, thereby wedging the same to ifla rsripthestock. Ontheother-handwhen themembei-Nismovedrearward,-this1willinstant'aneouslyreieasepressure'ontheiawssoas topermitthesametosliderearwardoverthe stock. SpringsN'withintherecessandbearing against the forward endsofthe laws willhold 60 the same in frictional engagement with the'stock.

e'lhereareaisobimbingsli'andll'inthesliding The intermediate section L holds thediememliyber O--through which the stockis passed to andfinishthesur- Inasmuch the feeder Nis forward of the die 0, it is obvious that some additional means must be provided to slightly reduce the diameter face thereof gag'edbysaldfeeder. I'brthisw poscIhave provided a second feeder P which is as the feederN and,

the same in construction will not be ducribed in detail. This second feederis actuatedbythefeederNthrough the medium 'of rods P. The forward ends of through apertures in the section I? of the frame L. The rear ends of these rods are also threaded and have engaged therewith correspondingly threaded sleeves P' which form shoul-' dersthatmaybeadiustedintodliierentposic ew P using the rear po t on o is a by first connecting each parallel to the surfaces.

forward endofthestockthroughthediebeforeitcanbem slidably mounted on the sleeve r and bearing against the rod P sition of adjustment. The rods P also pass through channels in the feeder P, and springs P sleeved on the rods forward of the feeder P servestolockthesemembersinanydesiredpo-- yieldably press said feeder rearward toward the limiting stops formed by the sleeves P'- ThebushingsN' andN'forthefeederNmay be selected with respect to the diameter of stock to be passed there ugh, and similar bushings are provided for the feeder P which are of a diameter corresponding to that of the stock before itpassesthroushthesizingdieo. Stillanother bushing 8 is mounted at the rear end .of the 'frameLandthestockisflrstfedthroughthis bushing and into operative relation to the jaws of the rear feeder P.

What I claim as my invention is: v

1. In a machine of the character described, a frame, means for advancing the stock slidablv mounted in said frame, a pair of shafts extending transversely of said frame on opposite sides of the stock, rock arms on said shafts, rods connecting said rock arms to said stock advancing means, means for oscillating one of said shafts,

' gearing between said shafts for effecting the simultaneous oscillation thereof, and means for adjusting at least one ofsaid rockarms on its shaft to'align the same with the other rock arm whereby the draft through said rods on said stock advancing means is equalized, said adjusting means including a reversible key having a wideportioncnzagingakeywayintherockarm adjusting said rock'arms on their respective shafts comprising spaced bearing members for engaging each shaft, one being integral with each rock arm, a reversible spline for connecting the other bearing member to each shaft, sis-ind spline having a narrow portion engaging shaft and having a wide right angularly extending portion enga ing the bearing, whereby reverse] of said spline eifects'adiustment 'of the rock arm, and an adjustable screw connection between the two members-of the bearing for-ef-' fecting further adjustment therebetween.

3. In a machine of the character described, a frame, means slidably mounted in the frame for advancing the stock, a pair of shafts carried by the frame, rock arms on said shafts, means connecting said rock arms to said stock advancmeans," means for one of said shafts, means for imparting such oscillating motion to the other of said shafts, and two means for aligning said rock arms on said s h'aftsso' that the draft through said connecting means on the stock advancing means is equalized, one of said aligning means comprising reversible keys substantially L-shape in cross section engaging keyways in said shafts and rock arms.

4. In a machine of the character described. a frame, stock advancing means including a head the frame and stock engaging jaws carried by said head, a pair of shafts carried by the frame, rock arms on said shafts,

aaaa'na rods connecting said arms to said head, means for oscillating one of said shafts, means for ima.

parting such oscillating motion to the other of slidably mounted on the frame and stock engaging jaws carried by said head, a pair of shafts carried by the frame, rock arms on said shafts,

means connecting said arms to said head, means for oscillating one of said shafts. means for imsaid shafts, and two means for aligning said arms on said shafts so that the draft through said connecting means on the head is equalized, one of said aligning means including reversible keys substantially L-shape in cross section engaging keyways in said shafts and rock arms.

6. In a machine of the character described. a frame, stock advancing meansincluding a head slidably mounted on the frame and stock engaging jaws carried by said head, a pain-of shafts carried by the frame, rock arms on said shafts. rods connecting said arms to said head, means for oscillating one of said shafts, means for imparting such oscillating motion to the other of said shafts, and two means for angularly adjust- 'parting such oscillating motion to the other of by the draft through said rods on said stock advancing means is'equalized, one of said aligning means including reversible keys substantially L- shape in cross section engaging keyways in said shafts and rock arms.

7. In a machine of the character described, a frame, meanscarried by said frame for advancing the stock, a pair of shafts carried by said frame, rock arms on said shafts, rods connecting said rock arms to said stock advancing means, means for oscillating one of said shafts, a driving connection betweensaid shafts,.and two means for adjusting at least one of said rock arms on its shaft to align the same with the other rock arm whereby the draft throughsaid rods on said stock advancing means is equalized, one of said means including reversible keys of L-cross section engaging keyways in said shafts androck arms.

a. In a machine of the character described. a frame, means carried by said frame for advancing the stock, a pair of shafts carried by said frame, rock arms on said shafts, rods connecting said rock arms to said stock advancing means, means for oscillating one of said shafts, gearing between said shafts for effecting the simultaneous oscillation thereof, and means for adjusting said rock arms on their respective shafts comprising spaced bearing. members for engaging each shaft, one being integral with each rock arm, a spline for connecting the other bearing member to each shaft, having the portion engaging the shaft substantially at right angles to the portion engaging the bearing, whereby reversal of said spline efiects adjustment of the rock arm. 7

,9. In a machine of the class described, a frame, stock advancing means carried by said framex jamair of shafts, intermeshing gears on said shafts, and rock arms on said shafts, each arm having cooperating bearing sections engaging its shaft, one section of each rock arm being adiustably keyed to its shaft, the other see:

' tion of each rock arm being adiustably connected to the keyed section and being connected to said stock advancing means.

10. In a machine of the class described, a

frame,.stock advancing means including a head slidably mounted on the frame, a pair of shafts carried by the frame, intermeshing gears fixed .to said shafts, and rock arms'on said shafts and connected to said head, at least one of said rock arms being adjustable on itsshaft to align the ing die, a .reciprocating feeder for moving stock through said die, and actuating means for said feeder including a pair of shafts extending transversely to the path of movementof the feeder, a driving connection, between saidishafts, sectional rock arms mounted bn said shafts, and links terminally connected to said feeder and rock arms, the mountings=for said rock arms including adjustments for said arms relative to saidshafts and adjustments for the respective sections relative to each other. v

12. In a machine of the class. described, a frame, a die for sizing stock carried by said frame, a reciprocating feeder for causing stock to be moved through said die, slideways for said feeder carried by said frame, and means for reciprocating the feeder in a direction substantially parallel to the slideways with substantially no tendency to tilt relative thereto, including a pair of shafts extending transversely to the path the same vertical plane and connected to each of the feeder, said shafts beingsubstantially in 4 other at one end, sectional rock arms mounted 40 arms relative to said shafts and adjustments for the respective sections relative to each other.

'13. In a machine of the class described, a

frame, a die for sizing stock carried by said-frame,

a reciprocating feeder for causing stock to be moved through said die, slideways for said feeder carried by said frame, and meansfor reciprocating the feeder in a-direction substantially parallel to the slideways with substantially no tendency to tilt relative thereto, including a pair of shafts extending transversely to the path of the feeder, said shafts being operatively connected to each other, sectional rockarms mounted on said shafts substantially in central alignment with the frame, and links terminally connected to said feeder and rock arms, the mountings for said rock arms including reversible key adjustments for said arms relative to said shafts and screw adjustments for the respective sections relative to'each other. a 14. In a machine of the class described, a frame, a die for sizing stock carried by said frame, a reciprocating feeder for causing stock to be moved through said die, slideways for said feeder carried by said frame, and means for reciprocating the feeder in the slideways, including a pair of shafts extending transversely to the path of the feeder and operatively connected to each other, sectional rock arms mounted on said shafts, and links terminally connected to said feeder and rock arms, the mountings for said rockarmainclisdmzedjustmenttiornldarms .trimml -tothemmormem relatlv'etdseldahamanq edimtmenta to: the mcvingmmadrlvlnzconnecflonbetweenafld WflVtmmRhflVe to each other. shafts, sectional rock arms mounted on an said lamamqehiqeot thechesdeea'lbema ahtttnlhdllnhtenninallyeonnectedto' 

